Joseph wants a television for his birthday that originally cost $740. Right
now, the television is on sale for 40%
off! Joseph's dad agreed to buy it, as
long as Joseph pays for 30% of the cost.
How much will Joseph have to pay?

133.2

Step-by-step explanation:

First take off the 40%

740 - (40/100)*740

740 - 0.4 * 740

740 - 296

444

That answer of 444 is the new selling price.

Now you take 30% of 444

30% of 444

30/100 * 444

0.3 * 444

133.2

Joseph will have to pay 133.2 dollars for the TV he want.

One Step

You could do this problem all in one step

30% (740*60% )

0.3 ( 740*0.6)

0.3(444)

133.2

Both methods give the same answer.

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3